Novel biosensor films based on chitosan
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Onjia, Antonije E.
Ostojic, Sanja B.
Micic, Darko M.
Veličković, Sava J.
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Films of chitosan and poly(itaconic acid) in various different ratios have been prepared by membrane casting. The enhancement in the proton conductivity and uptake of water was observed as the content of poly(itaconic acid) in film increased. The proton conductivity of chitosan/poly(itaconic) films was comparative with commercially used synthetic sensor Nafion 117. Films showed thermal stability up to 185 degrees C. The proposed experiment might open up a new possibility for use of chitosan/poly(itaconic acid) films as a biosensors due to their advantages: low cost, simple preparation and good conductive sensitivity. (C) 2015 Elsevier B.V. All rights reserved.